Motor.



H. STONE & G. W. SCOTT.

MOTOR.

APPLICATION FILED MAY 24, 1912,

1,052,763, Patented Feb. 11, 1913.

county, and State of UNITED STATES PATENT OFFICE.

HAWLEY storm, or BJOSEBANK, AND GEORGE w. soon, on NEW YORK, N. Y.

MOTOR.

Speciflcation of Letters Patent.

Patented Feb. 11, 1913.

Application filed May 24, 1912. Serial No. 699,428.

To all whom it may concern Be it known that we, HAWLEY STONE, a citizenof the United States, and a resident of Rosebank, in the county ofRichmond andState of New York, and GEORGE W. Sco'rr, .a -citizen of theUnited States, and a resident of the boron h of Brooklyn, city,

ew York, have invented .certain new and useful Improvements in Motors,of which the following is aspecification.

Our invention relates tothe class of motors ,in which the reciprocatorymotion of a piston is converted directly into rotary motion without theintervention of crank connections &c. and our object is to afiord asimple, practical, light, 'but'compact and substantial, evenly balancedanti-friction motor of relatively high power and efficiency, adapted tothe requirements of ac tual use.

The invention consists in the specific construction and arrangement ofarts hereinafter describedand claimed, a istinguishing feature being apiston formed with a continuous internal cam groove having a pluralityof reciprocal race ways engaging with radial driving rollers on acentral power shaft, whereby the latter is rotated by the reciprocationof the piston as hereinafter more fully set forth.

In the construction shown in the accompanying'drawings by way ofillustrating the ractical application of our invention, we 5 ow insectional elevation the essential parts of a hydro-carbon or internalcomustion engine, it being understood that we do not confine ourselvesexclusively to that class of motor, since the new principle ofconstruction involved is a plicable to steam and other motors in whichthe expansive force is applied to a reciprocatory piston.

P, represents the outer casing or shell of a trunk piston closed at oneextremity and open to the cylinder C, at the other. Protruding into thepiston P, through its open end is one extremity of the power shaft S,mounted in a bearing b, formed for it in the head B, of the cylinder C.This inner end of the power shaft S, is formed with a head a, carryingradially arranged driving rollers d, d, which engage with a continuouscam groove 9, formed in the interior of the piston, preferably thoughnot necessarily, in or b means of a lining G, of the shell P, as iustrated in the drawing, in which case the linin is divided by thegroove 9, into two sections, the opposed edges of which form the sidewalls of the groove.

In the arrangement of parts shown herein the cam groove 9, is duplex inthat duplicate reciprocatory race-ways or advance and retraction thrustsare formed, one in each half of the cylinder, and the shaft head 8, isprovided with two diametrically disposed driving rollers d, d, engagingtherewith;

We thus attain a perfect balance of iston and of driving shaft, althoughit is o vious that the number of reciprocatory cam groove raceways androllers .may be increased with like result, provided they are spacedequi-distant; and hence we do not limit ourselves to the diametricaldisposition of parts shown but claim any plural duplication ofsymmetrically arranged reciprocatory cam race-Ways and driving rollers.The perfect balance and distribution of strain thus attained reducesfrictional resistance to the minimum and adds materially to theefliciency of the engine. Thus by means of the duplication of powerrollers and cam race-ways shown in the drawing we attain the equivalentof a two cylinder engine in a single cylinder; and by increasing thenumber of equidistant reciprocatory cam race-ways and shaft rollers thisresult may be still further augmented, each reciprocatory cam race-wayrepresenting the equivalent of a cylinder.

In order that the drivin rollers d, (1, may run perfectly true andwithout peripheral slip or frictional loss, we make the travelingsurfaces of the heads d, d, thereof convergent with relation to theaxial center of the shaft S, and, also make the side walls of the grooveg, of like inclination, so that the outer edge of each roller travels atthe same peripheral speed as the inner portion thereof. Hence the motionimparted to the shaft is smooth and uniform.

The conical heads (1', d, of the rollers d, d, are formed withcylindrical shanks d, d,

fitting in radial sockets s, 8 formed for axial oil duct 8 in the shaftS, which duct communicates with the roller sockets 8,8, and with atransverse duct 8 opening into an annular groove 8, in the portion ofthe shaft within the "bearing 6, said annular groove 8, being fed with asuitable lubricant through the duct b, in the head B, in suitableor'well known manner. The cy indrical shanks d d of the driving rollem (I,d, are also formed with axial ducts d (1 opening into transversedistributing ducts d, d, in the conical roller heads d, d, so that thelubricant is freely distributed to all the contacting surfaces.-

The shaft S, is held against longitudinal movement by anti-frictionthrust bearings a, a, preferably interposed between the main bearing b,in'the head B, and annular shoulders s", s, on the -'shaft S,the lattershoulder .9 beingjrepresented in the present case by the hub of the flywheel F.

The piston P, is held in alinement and prevented from turning on itsaxis b tongues p, p, which protrude into longitudinal grooves orrecesses c, c, in the cylinde'r casing C, the length of said'alinementrecesses c, a, being suflicient to accommodate the tongues p, p, for thefull reciprocal thrust of the cam groove g.

The combustion end or chamber C, of the cylinder is provided with anelectric sparker e, or equivalent ignition device; and is formed withthedischarge port a, and inlet port 0 which latter communicates throughthe passage c with the rear of the cylinder into whichhydro-carbon'from. the carbureter is introduced, as in a two cycle,three port engine, when the supply port 0, is uncovered by the pistonP,-,- the latter acting as its own port valve in a manner well known inthe art,--and the explosion of the charge in the combustion chamber C,driving the piston P, in one direction, and the momentum of the flywheel F, re-

turning it in the other direction to receive the force of the nextsucceeding explosion, and so on continuously durlngthe operation of theengine it being understood that the continuous-internal cam groove g, inthe piston, acting through the driving rollers d. d, converts the powerthrust stro e of the piston into the rotary motion of the shaft,

and vice versa, during the retractile or feed thrust stroke of theiston. It is also to be noted in this connection that vibration ispractically, eliminated, and that the power is greatly increased, asthere are at least two explosions and power strokes of the piston toevery revolution of the shaft, and as many more as may be provided foras hereinbefore set forth.

From the foregoing it will be seen that the device is simple in itsnature, themoving parts are few and the structure as a whole is compact.

What we claim as our invention and desire to secure by Letters Patentis,

1. A motor of the character designated, comprising a power cylinder andconnections, a piston in said cylinder formed with an internalcontinuous driving cam groove having a plurality of equi-distantreciprocatory race-ways extending in the same direction lengthwise ofthe piston, "a rotatable shaft protruding into said piston and providedwith a plurality of equidistant driving rollers engaging with the saidreciprocatory race-ways .in the interior of the piston, and cooperatingrecesses and tongues on the cylinder and pis ton for guiding said pistonand preventing it turning during its reciprocation, and a fly wheel onsaid shaft, for the purpose set I forth.

2. A motor of the character designated comprising a power cylinder andconnections, a piston in said cylinder formed with an internalcontinuous driving cam groove having duplicate reciprocatory race-waysextending in the same direction lengthwise of the piston, one in eachhalf of the piston, a rotatable shaft protruding into said piston andprovided with diametrically disposed driving rollers engaging saidreciprocatory.

race-ways in the interior of the piston, and cooperating recesses andtongues on the cylinder and piston for guiding the piston and preventingits turning during its recip procation, and a fly wheel on said shaft,for the purpose described.

'3. A motor of the character designated, comprising a power cylinder andconnections, a piston in said cylinder formed with an internalcontinuous driving cam groove having a plurality of equi-distantreciprocatory race-ways extending in the same direction lengthwise ofthe piston, the side wallsof which converge toward the axial center ofthe piston, a rotatable shaft protruding into said piston and providedwith a plurality of equi-distant driving rollers formed with conicalheads contacting with the convergent side walls of the said driving camgroove in the interior of the piston, and 00- operating recesses andtongues on the cylin der and piston for guiding thepiston and preventingits turning durin its reciprocation, and a fly wheel on sai shaft, forthe purpose described.

4. A motor of the character designated 7 comprising a power cylinder andconnections, a front piston closed at one end and open to the cylinderat the other, a power shaft protruding through the open end of thepiston, radially arranged driving rollers carried by the end of theshaft within the piston, the interior wall of said piston being formedwith a continuous cam groove, said the cylinder and piston for guidingthe 10 rollers being spaced equidistant and the piston and preventingits turning during cam groove having duplicate reciprocatory itsreciprocation.

raceways extendin in the same direction of 7 n the length of the Pistonwhereby the power thrust stroke of the piston is converted into rotarymotion of the shaft and vice versa Witnesses:

during the feed thrust stroke of the piston and cooperating recesses andtongues on GEO. WM. MrATr, G. W. HOPKINS.

